Abstract: An electromagnetic well logging tool for a wireline logging process, includes a shaft, a transmitter coil mounted on the shaft and configured to generate primary magnetic fields for propagation into a well formation, upon excitation by a first current, a receiver coil mounted on the shaft at a predefined distance from the transmitter coil and configured to receive secondary magnetic fields generated from the well formation, and a bucking coil mounted on the shaft in a concentric arrangement with the receiver coil, wherein the bucking coil is configured to generate magnetic fields at the receiver coil upon excitation by a second current, for cancelling the magnetic fields generated at the receiver coil due to direct coupling between the transmitter and receiver coils.

Abstract: An electromagnetic well logging tool for a wireline logging process, includes a shaft, a transmitter coil mounted on the shaft and configured to generate primary magnetic fields for propagation into a well formation, upon excitation by a first current, a receiver coil mounted on the shaft at a predefined distance from the transmitter coil and configured to receive secondary magnetic fields generated from the well formation, and a bucking coil mounted on the shaft in a concentric arrangement with the receiver coil, wherein the bucking coil is configured to generate magnetic fields at the receiver coil upon excitation by a second current, for cancelling the magnetic fields generated at the receiver coil due to direct coupling between the transmitter and receiver coils.